Ambie AM-TW01 sound earcuffs ear-clip true wireless earphones teardown

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Ambie is a brand under Sony that focuses on providing a new music experience. Different from other in-ear earphones, Ambie’s products all adopt a unique ear-clip wearing method, but unlike bone conduction headphones, ambie headphones are still air conduction and have an open-ear audio experience.

52audio has previously shared with friends Ambie’s newly released ambie sound earcuffs ear-clip true wireless earphones. The earphones are designed with ear-clip, but this time they are upgraded to wireless headphones, which are developed and produced by Shenzhen MEES Technology Co., Ltd. Functionally, earphones have designed a low-latency mode and support single-binaural mode. In terms of configuration, earphones use Qualcomm QCC3040 bluetooth master chip and Bluetooth 5.2 specification, and support SBC/AAC audio codec. Support CVC8.0 call noise cancelling, with built-in microphone unit, to achieve clear call effect.

The Sony true wireless earphone products teardowned by 52audio include: SONY WF-C500 true wireless earbuds, Sony WF-1000XM4 true wireless noise cancelling earbuds, Sony WF-XB700, Sony WF-H800, Sony WF-SP900 true wireless waterproof sports earphones, Sony XPERIA Ear Duo open-ear true wireless headphones, etc. Let’s take a look at the detailed teardown report of this product.


|1. Ambie AM-TW01 sound earcuffs ear-clip true wireless earphones unboxing

The outer packaging of ambie ear-clip true wireless earphones uses recyclable paper materials as packaging materials.

Accessories inside the box: Product instruction manual*1, customized USB A to Type-C data cable*1.

USB A to Type-C data cable interface. Among them, the Type-C connector uses an L-type connector, which is convenient to use.

The ambie logo is printed on the front of the charging case, and the charging case status indicator is under the ambie.

There is a Type-C interface on the back of the charging case for charging the charging case with a data cable. The charging case is opened and closed by a hinge, which is firm and durable.

Open the charging case cover and you can see the ambie ear-clip true wireless earphones. The earphones use the same milky white design as the charging case, giving people a seamless feeling.

ambie sound earcuffs

The ambie ear-clip true wireless earphones use a “C”-shaped ear clip design, which can be worn securely without clipping the ear.

Take out the earphones, you can see that the earphone cockpit is designed with a slot according to the structure of the earphone, and there are metal contacts for charging the earphone in the groove.

Screen printing information inside the charging case cover: ambie company, model AM-TW01, made in China, capacity 270mAh, 5V⎓2A.

There is a small protrusion on the left earphone handle, which is convenient for users to distinguish the left and right ears.

On the side of the ambie ear-clip true wireless earphone, both ends of the earphone are designed with rounded spheres, without any patterns or buttons, and the beautiful arc of the earphone creates a simple look and feel.

The “ambie” logo is printed on the top of the ambie ear-clip true wireless earphones, and the light gray design will not look obtrusive.

The back of the earphone has a working indicator and a microphone.

The bar-shaped tuning hole on the earphone is used to ensure the air circulation inside the sound cavity and improve the acoustic performance.

The speaker opening on the inside of the headphone head is provided with a metal dust-proof mesh to prevent foreign objects from entering the sound cavity.

The metal contacts for charging the earphone are set at the bottom of the earphone, and there are L/R logos on the left and right sides of the metal contacts.

The charging metal sheet of ambie ear-clip true wireless earphones is marked with L/R next to the charging metal sheet, which is convenient for users to distinguish the left and right ears.

Use a portable power tester to test the wired charging of ambie ear-clip true wireless earphones. The charging voltage is about 5.23V, the charging current is about 0.26A, and the charging power is about 1.35W.

After actual measurement, the weight of the ambie charging case is about 35.4g.

The overall weight of the ambie ear-clip true wireless earphones is about 9.0g.


|2. Ambie AM-TW01 sound earcuffs charging case teardown

After reading the unique and interesting appearance of ambie ear-clip true wireless earphones, let’s move on to teardown.

First remove the headphone cockpit along the parting line.

The front of the earphone charging cockpit, and the charging case motherboard and battery at the bottom of the charging cockpit.

The Type-C charging interface is designed on the back of the charging case motherboard, and the sinking plate is welded to reduce the thickness.

The battery at the bottom of the charging cockpit is connected to the charging case motherboard by wire soldering.

Unscrew the screws securing the charging case mainboard and remove the charging case mainboard.

The ZIF connector on the motherboard is protected by a sponge pad to prevent the connector from loosening due to vibration.

Remove the FPC cable from the ZIF connector, the back structure of the earphone charging cockpit, and the four magnets inside the pod to fix the headphone.

A magnet for attracting the upper case of the charging case.

Silkscreen 1KAn Hall element, the magnetic field change when the charging case cover is opened and closed will be sensed by the Hall element, which will then notify the charging case MCU and earphone to pair or disconnect from the connected device.

The 2 LED indicators on the motherboard are protected by a sponge cover to prevent light leakage.

The front of the charging case motherboard.

The back of the charging case motherboard.

Pogo pin connector for charging earphones.

Silkscreen “01116Y” overvoltage protection chip, used for charging case input overvoltage and overcurrent protection.

INJOINIC IP5516 charging case management SoC, integrated MCU, boost converter, lithium battery charging management, battery level indicator, 5V one-way communication and other functions, provides a complete power solution for the TWS bluetooth headphone charging case.

IP5516 supports 300mA synchronous boost output, 500mA linear charging, adjustable input current and supports adaptive adjustment, supports high-voltage platform batteries, built-in ADC to calculate battery power, and supports 1-4 LEDs or 5-6pin 188 digital tube power display. The high integration and rich functions of IP5516 make it only need very few peripheral devices in application, and effectively reduce the size of the overall solution and reduce the cost of BOM.

According to 52audio, TWS headphone charging cases of Edifier, JLab, Hiby, Baseus, Pioneer, PIHEN, BULL, AUKY, MPOW, BoAt, Nokia, Lenovo and other brands have adopted INJOINIC’s power management solution.

The charging case battery model ST681530 is from Shenzhen Shentong Tianxia Technology Co., Ltd., with a rated voltage of 3.7V and a rated capacity of 270mAh/1.0Wh.

Uncover the high temperature tape of the battery, and there are ICs and MOS tubes for the protection circuit on the battery.


|3. ambie sound earcuffs ear-clip eartphones teardown

After disassembling the charging case, let’s disassemble the ambie ear-clip true wireless earphones.

First we remove the silicone cover of the earphones.

The silicone case of ambie ear-clip true wireless earphones shows good toughness.

The side of the ambie ear-clip true wireless earphones after removing the silicone cover.

The control buttons on the ambie ear-clip true wireless earphones are used to control the earphones.

Information on the top of the headphone stem, model ambie AT1R, made in China, charging is 5V DC.

Remove the earphone’s casing along the parting line. The shell of the ambie ear-clip true wireless earphones consists of three parts, from left to right, the earphone front shell, the earphone arc bracket, and the earphone rear shell.

The internal structure of the earphone front shell, the left side is the magnet that adsorbs the earphone to the charging case, the middle is the button module, and the right side is the acoustic structure gasket corresponding to the earphone MEMS microphone.

The magnet on the front shell of the earphone is used for the adsorption of the earphone and the charging case.

The acoustic structure of the microphone is sealed while improving the pickup performance of the microphone.

The front end of the earphone arc bracket is fixed with an earphone battery, an earphone main board and a micro-motion button.

The front side of the earphone arc bracket.

The micro button is designed on the FPC cable, and there is a milky white silicone cushion under the button to improve the feel of the button and support the button.

Remove the FPC cable, and the jog buttons on the FPC cable.

Remove the micro-button FPC cable and the silicone buffer.

Below the silicone cushion is the earphone battery, and there is a cushioning sponge above the battery.

Below the earphone battery is the earphone motherboard. The earphone battery is fixed on the earphone motherboard with double-sided tape.

Take out the earphone motherboard and the inner cavity structure of the earphone bracket front shell.

The earphone button battery is from Dongguan LIDEA Electronics, the battery model is LIR1040, and the rated voltage is 3.6V.

LED lights on the earphone motherboard.

The MEMS microphone on the earphone’s mainboard is used to provide the pickup function for the earphone’s voice calls.

The front of the earphone motherboard.

The back of the earphone motherboard.

A non-standard integrated lithium battery protection IC.

‎Qualcomm QCC3040 is a very low energy bluetooth audio SoC in a BGA package designed for mid to entry-level true wireless earbuds. ‎

The QCC3040 is optimized for earbuds and ear-worn devices. The QCC3040 is a single-chip solution designed to enhance the true wireless consumer experience with robust connectivity, all-day wear and comfort, integrated Active Noise Cancellation (ANC), voice assistant support and Qualcomm TrueWireless mirroring technology. ‎

The QCC3040’s BGA package is designed to increase manufacturing speed and help manufacturers get to market faster with the next generation of true wireless earbuds. ‎

According to 52audio, Qualcomm bluetooth SoC audio chips are also used: Bose, vivo , Jabra, Xiaomi, JBL, Cleer, LIBRATONE, 1MORE, OnePlus, EDIFIER, OPPO, AfterShokz, FiiO, UGREEN and other brands.

‎Details of the Qualcomm QCC3040 bluetooth Audio SoC.

The FPC cable connecting the speakers is fixed on the guide rail in the middle of the arc bracket.

The earphone’s FPC cable is fixed on the earphone bracket with double-sided tape.

The earphone speaker unit is connected to the earphone motherboard through the FPC cable.

After actual measurement, the sound unit size of ambie ear-clip true wireless earphones is about 9.01mm.

There is also a magnet on the rear shell of the arc bracket for the adsorption of earphone and charging case.

All components of ambie ear-clip true wireless earphones.


Summary:

ambie sound earcuffs ear-clip true wireless earphones use the C-shaped design in appearance to better fix it on the ear and fit tightly. The charging case is compact and weighs only 35.4g.

The charging case has a Hall element on the internal configuration to realize the function of the headphone open the box and pair devices automatically. The battery model ST681530 is from Shenzhen Shentong Tianxia Technology Co., Ltd., with a rated voltage of 3.7V and a rated capacity of 270mAh/1.0Wh. The charging case management SoC comes from INJOINIC IP5516, supports 300mA synchronous boost output, 500mA linear charging, adjustable input current and supports self-adaptation. The chip integrates functions such as MCU, boost converter, lithium battery charging management, battery power indicator, 5V one-way communication, etc., so that it only needs very few peripheral devices during application, and effectively reduces the size of the overall solution and BOM. It provides a complete power solution for the TWS bluetooth headphone charging compartment at low cost.

In the internal configuration of earphones, the battery uses LIDEA LIR1040 with a rated voltage of 3.6V. The bluetooth audio SoC features the Qualcomm QCC3040 for robust connectivity, all-day wear and comfort, integrated Active Noise Cancellation (ANC), voice assistant support and Qualcomm TrueWireless mirroring technology. ‎

Source: 52audio


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Ambie clip-ear true wireless earbuds review: Open-ear music experience with bluetooth 5.2 support

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